PI90LV179
3.3V LVDS High-Speed Differential
Line Driver and Receiver
Features
Description
• Signaling Rates >660 Mbps (330 MHz)
The PI90LV179is a differential line driver and receiver (transceiver) that is compliant with the IEEE 1596.3 SCI and ANSI/
TIA/EIA-644 LVDS standards. This device uses low-voltage
differential signaling (LVDS) to achieve data rates in excess of
660 Mbps while being less susceptible to noise than single-ended
transmission.
• Single 3.3V Power Supply Design
• Driver:
— ±350mV Differential Swing into a 100-ohm load
— Propogation Delay of 1.5ns Typ.
— Low Voltage TTL (LVTTL) Inputs are 5V Tolerant
The driver translates a low-voltage TTL/CMOS input into a lowvoltage (350mV typical) differential output signal. The receiver
translates a differential 350mV input signal to a 3V CMOS output level.
• Receiver:
— Accepts ±50mV (min.) Differential Swing with up to 2.0V
ground potential difference
— Propagation Delay of 3.3ns Typ.
— Low Voltage TTL (LVTTL) Outputs
— Open, Short, and Terminated Fail Safe
Applications
• Industrial Temperature Operating Range: –40°C to 85°C
Applications include point-to-point and multidrop baseband data
transmission over a controlled impedance media of approximately 100 ohms. These include intra-system connections via
printed circuit board traces or cables, hubs and routers for data
communi- cations; PBXs, switches, repeaters and base stations
for telecommunications and other applications such as digital
cameras, printers and copiers.
• Meets or Exceeds IEEE 1596.3 SCI Standard
• Meets or Exceeds ANSI/TIA/EIA-644 LVDS Standard
• Bus terminal ESD = 2KV HBM
• Packaging (Pb-free & Green available):
— 8-pin SOIC or MSOP
Pin Diagram & Block Diagram
VCC
ROUT
DIN
GND
8-Pin
U, W
DOUT+
DIN
RIN+
DOUT-
RIN–
DOUT–
DOUT+
RIN+
RIN-
ROUT
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Function Tables
PI90LV179 Driver
PI90LV179 Receiver
Inputs
Output
Input
VID = VRIN+ – VRIN–
H
DIN
DOUT+
DOUT–
VID ≥ 50mV
H
L
L
H
–50mV < VID < 50mV
?
H
H
L
VID ≤ –50mV
L
open
L
H
open
H
Output
Notes:
H = High Level, L = Low Level, ? = Indeterminate,
Z = High-Impedance, X = Don’t Care
Pin Descriptions
Pin Name
DIN
Description
TTL/CMOS driver input pin
DOUT+
Non-inverting driver output pin
DOUT-
Inverting driver output pin
ROUT
TTL/CMOS receiver output pin
RIN+
Non-inverting receiver input pin
RIN–
Inverting receiver input pin
GND
Ground pin
VCC
Positive power supply pin, +3.3V ±10%
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Absolute Maximum Ratings
Note: Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
reliability.
Supply Voltage (VCC)........................................ –0.5V to +4.0V
Driver
Input Voltage (DIN)........................... –0.3V to (Vcc + 0.3V)
Output Voltage (DOUT+, DOUT-)........................ –0.3V to +3.9V
Short Circuit Duration (DOUT+, DOUT-)...................Continuous
Receiver
Input Voltage (RIN+, RIN-)............................... –0.3V to +3.9V
Output Voltage (ROUT).........................–0.3V to (VCC + 0.3V)
Storage Temperature Range.......................... –65°C to +150°C
ESD Rating.............................................................. 2kV HBM
Recommended Operating Conditions
Min.
Typ.
Max.
Supply Voltage (VCC)
3
3.3
3.6
High Level Input Voltage, VIH
2
Low Level Input Voltage, VIL
Units
0.8
Magnitude of Differential Input Voltage VID
Common-mode Input Voltage, VIC (Fig 5)
V
0.1
0.6
|VID| /2
2.4
– |VID| /2
VCC –0.8
Operating Free Air Temperature TA
–40
85
°C
Electrical Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
(2)
ICC Supply
Current
Test Condition
Min.
Typ.(1)
Max.
Units
8.0
10.8
mA
No receiver load, Driver RL = 100 ohms
Notes:
1. All typical values are at 25°C with a 3.3V supply
2. ICC measured with all TTL input. VIN = VCC or GND.
Electrical Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
Test Conditions
|VOD|
Differential output voltage magnitude
D|VOD|
Change in differential output voltage magnitude between
logic states
VOC(SS)
Steady-state common-mode output voltage
DVOC(SS)
Change in steady-state common-mode output voltage
between logic states
VOC(PP)
Peak-to-peak common-mode output voltage
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15-0116
RL = 100 ohms
See Figures 1 and 2
Min.
Typ.
Max.
247
390
470
–50
1.125
See Figure 3
50
1.25
–50
50
50
3
1.375
Units
mV
V
mV
150
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Parameter
Test Conditions
Min.
Typ.
Max.
IIH
High-level input current
DIN
VIH = 5V
2
20
IIL
Low-level input current
DIN
VIL = 0.8V
2
10
IOS
Short-circuit output current
VOY or VOZ = 0V
–6
–9
VOD = 0V
–8
–11
IO(OFF)
Power-off output current
CIN
Input capacitance
VCC = 0V, VO = 3.6V
±1
7
Units
µA
mA
µA
pF
Receiver Electrical Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
Test Conditions
Min.
Typ.
Max.
VITH+
Positive-going differential input voltage threshold
VITH–
Negative-going differential input voltage threshold
VOH
High-level output voltage
IOH = –8mA
VOL
Low-level output voltage
IOL = 8mA
II
Input current (RIN+ or RIN–)
II (OFF)
Power-off input current (RIN+ or RIN–)
VCC = 0
±20
IH
High-level input current (enables)
VIH = 2V
±10
IL
Low-level input current (enables)
VIL = 0.8V
±10
CI
Input capacitance
See Figures 4 & Table 1
VI = 0
VI = 2.4V
50
–50
2.4
Units
mV
V
0.4
–2
–11
–1.2
–3
5
V
–20
µA
pF
Note: All typical values are at 25°C with a 3.3V supply
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Driver Switching Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
Test Conditions
tPLH
Propagation delay time, low-to-high-level output
tPHL
Propagation delay time, high-to-low-level output
tr
tf
Differential output signal rise time
tsk(p)
Pulse skew (tPHL - tPLH)
tsk(pp)
Part-part-part skew(2)
Min.
RL = 100 ohms
CL = 10pF
See Figure 2
Differential output signal fall time
Typ.(1)
Max.
1.9
2.5
1.9
2.5
0.6
1.1
0.6
1.1
270
Units
ns
ps
0.9
ns
Typ.(1)
Max.
Units
Notes:
1. All typical values are at 25°C with a 3.3V supply.
2. tsk(pp): magnitude of difference in propagation delay times between any specific terminals of two devices (all things being equal).
Receiver Switching Characteristics (Over recommended operating conditions unless otherwise noted).
Parameter
Test Conditions
Min.
tPLH
Propagation delay time, low-to-high-level output
2.0
3.1
tPHL
Propagation delay time, lhigh-to-low-level output
2.2
3.1
tsk(pp)(2)
Part-part-part skew(2)
tsk(p)
Pulse skew (tPHL – tPLH)
tr
tf
CL = 10pF
See Figure 5
ns
1.3
300
500
ps
Output signal rise time
0.9
1.5
ns
Output signal fall time
1.0
1.8
ns
Notes:
1. All typical values are at 25°C with a 3.3V supply
2. tsk(pp): magnitude of difference in propagation delay times between any specific terminals of two devices (all things being equal)
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Parameter Measurement Information
DOD+
II
DOUT+
DIN
Driver
VOD- + VOD+
2
VOD
VOD+
DOUT–
VOC
VI
VOD–
Figure 1. Driver Voltage and Current Definitions
Driver (continued)
DOUT+
VOD
DIN
DOUT–
100 Ω
±1%
CL = 10 pF
(2 Places)
2V
1.4 V
0.8 V
DIN
t PHL
t PLH
100%
80%
VOD(H)
Output
0V
VOD(L)
20%
0%
tf
tr
NOTE A: All input pulses are supplied by a generator having the following characteristics: tr or tf £ 1 ns, pulse repetition rate (PRR) = 50 Mpps,
pulse width = 10 ± 0.2 ns . CL includes instrumentation and fixture capacitance within 0.06 mm of the D.U.T.
Figure 2. Test Circuit, Timing, and Voltage Definitions for the Differential Output Signal
49.9 Ω, ±1% (2 Places)
3V
DOUT+
DIN
0V
DOUT–
CL = 10pF
(2 Places)
VOC
VOC(PP)
VOC(SS)
VOC
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NOTE A: All input pulses are supplied by a generator having the following characteristics: tr or tf £ 1 ns, pulse repetition rate (PRR) = 50 Mpps,
pulse width = 10 ± 0.2 ns . CL includes instrumentation and fixture capacitance within 0.06 mm of the D.U.T
. The measurement of VOC(PP)
VOD(L)
20%
0%
tf
tr
PI90LV179
NOTE A: All input pulses are supplied by a generator having the following characteristics: tr or tf £ 1 ns, pulse repetition rate (PRR) = 50 Mpps,
pulse width = 10 ± 0.2 ns . CL includes instrumentation and fixture capacitance within 0.06 mm of the D.U.T.
3.3V LVDS High-Speed Differential Line Drivers and Receivers
49.9 Ω, ±1% (2 Places)
3V
DOUT+
DIN
0V
DOUT–
CL = 10pF
(2 Places)
VOC
VOC(PP)
VOC(SS)
VOC
NOTE A: All input pulses are supplied by a generator having the following characteristics: tr or tf £ 1 ns, pulse repetition rate (PRR) = 50 Mpps,
pulse width = 10 ± 0.2 ns . CL includes instrumentation and fixture capacitance within 0.06 mm of the D.U.T
. The measurement of VOC(PP)
is made on test equipment with a –3 dB bandwidth of at least 300 MHz.
Figure 3. Test Circuit and Definitions for the Driver Common-Mode Output Voltage
Receiver
RIN+
VIRIN++VIRIN–
VID
2
VIRIN+
VIC
VIRIN–
ROUT
RIN–
VO
Figure 4. Receiver Voltage Definitions
APPLIED VOLTAGES
(V)
RESULTING DIFFERENTIAL
INPUT VOLTAGE
(mV)
RESULTING COMMONMODE INPUT VOLTAGE
(V)
VID
VIC
1.175
50
1.2
1.175
1.225
–50
1.2
2.375
2.325
50
2.35
2.325
2.375
VIRIN+
1.225
VIRIN+
–50
2.35
0.1
0
50
0.05
–50
0.05
0
0.05
1.5
0.9
600
0.9
1.5
–600
1.2
2.4
1.8
600
2.1
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1.8
0.6
2.4
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7 –600
600
1.2
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2.1
0.3
IC
VIRIN–
PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Table 1. Receiver Minimum and Maximum Input Threshold Test Voltages
APPLIED VOLTAGES
(V)
VIRIN+
VIRIN+
RESULTING DIFFERENTIAL
INPUT VOLTAGE
(mV)
RESULTING COMMONMODE INPUT VOLTAGE
(V)
VID
VIC
1.225
1.175
50
1.2
1.175
1.225
–50
1.2
2.375
2.325
50
2.35
2.325
2.375
–50
2.35
0.1
0
50
0.05
0
0.05
–50
0.05
1.5
0.9
600
1.2
0.9
1.5
–600
1.2
2.4
1.8
600
2.1
1.8
2.4
–600
2.1
0.6
0
600
0.3
0
0.6
–600
0.3
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Receiver (continued)
VID
VIRIN+
CL
10pF
VIRIN–
VO
VIRIN+
1.4 V
VIRIN–
1V
VID
0.4 V
0V
– 0.4 V
t PHL
VO
t PLH
VOH
2.4 V
1.4 V
0.4 V
tf
tr
VOL
Note A: All input pulses are supplied by a genertor having the following characteristics: tr or tf 1ns, pulse repetition
rate (PRR) = 50 Mpps, pulse width = 10 ±0.2ns. CL includes instrumentation and fixture capacitance within
0.06m of the D.U.T.
Figure 5. Timing Test Circuit and Waveforms
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Packaging Mechanical: 8-Pin SOIC (W)
15-0103
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PI90LV179
3.3V LVDS High-Speed Differential Line Drivers and Receivers
Packaging Mechanical: 8-Pin MSOP (U)
14-0272
Note: For latest package info, please check: http://www.pericom.com/support/packaging/packaging-mechanicals-and-thermal-characteristics/
Ordering Information
Ordering Number
Package Code
Package Description
PI90LV179WE
W
8-Pin, 150mil-Wide (SOIC)
PI90LV179WEX
W
8-Pin, 150mil-Wide (SOIC), Tape & Reel
PI90LV179UE
U
8-Pin, Mini Small Outline Package (MSOP)
PI90LV179UEX
U
8-Pin, Mini Small Outline Package (MSOP), Tape & Reel
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free and Green
• X suffix = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
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